More surprisingly, there is some evidence that the more experienced experimenters may induce greater rather than smaller expectancy effects.
Usually, however, the experimenter is ignorant of the expectancy effects he exerts.
Specifically, dowsing could be explained in terms of sensory cues, expectancy effects and probability.
There is now an expectancy effect created that any new atrocity is likely to be connected to the earlier ones.
The police often collaborate in producing an expectancy effect.
The subject expectancy effect is also clearly seen in psychotherapy.
The main observer biases to be wary of are expectancy effects.
If you actively avoid giving your observers reason to expect a certain outcome, expectancy effects are greatly diminished.
The symptoms reflect consumers' expectancy effects on caffeine to some degree.
One study demonstrated the impact of expectancy effects in parents' perceptions of their children's hyperactivity after consuming sugar.